Mathematical Critical Thinking Skill, Problem-Based Learning Model, Similarity Topic, Visual Media

. This study aims to determine the effect of the Problem-Based Learning model assisted by visual media on student learning outcomes on a Similarity topic. This research is experimental research using a randomized pretest-posttest control group design. The population used in this study were ninth-grade students of one of the junior high schools in Kerinci, Jambi. The sample selection used a random sampling technique. Research data was obtained through pretest and posttest.